Im trying to repair an identical board, and need to find the components below the 4 pin socket connector (which I'm also trying to find the exact part number for if anyone can recognize it). More importantly I need to figure out what the 3 Pin IC below the socket is, which looks like some sort of transistor.

The marking is "ADZV" horizontally (with a line above the Z), and "1Y" vertically. The only thing I could come up with was with the 1Y marking, and that lead me to a NPN transistor packaged as an SOT23.